java call web service which is c# coding

C#接口： 
using System; 
using System.Web; 
using System.Web.Services; 
using System.Web.Services.Protocols; 
using System.Web.Services.Description; 
[WebService(Namespace = " http://www.tangs.com/ " )] 
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] 
public class Service : System.Web.Services.WebService { 
 public Service () { 
 // 如果使用设计的组件，请取消注释以下行 
 // InitializeComponent();
 } 
 [SoapRpcMethod(Action = " http://www.tangs.com/Add " ,
  RequestNamespace = " http://www.tangs.com/T " ,
  ResponseNamespace = " http://www.tangs.com/T " ,
  Use = SoapBindingUse.Literal)] [WebMethod] 
 public int Add( int a, int b) {
  return a + b; 
  } 
  [SoapRpcMethod(Action = " http://www.tangs.com/Hello " , 
  RequestNamespace = " http://www.tangs.com/T " ,
  ResponseNamespace = " http://www.tangs.com/T " ,
  Use = SoapBindingUse.Literal)] 
  [WebMethod] 
 public String HelloWorld() { 
 return " Hello, world! " ;
  
 }
} 
   
Java调用这个Webservice中的Add方法和HelloWorld方法：
1.有参方法：
Add 
public static void addTest() { 
  try { 
 Integer i = 1 ; 
 Integer j = 2 ;
  // WebService URL
  String service_url = " http://localhost:4079/ws/Service.asmx " ;
  Service service = new Service();
 Call call = (Call) service.createCall();
 call.setTargetEndpointAddress( new java.net.URL(service_url));
 // 设置要调用的方法
 call.setOperationName( new QName( " http://www.tangs.com/T " , " Add " ));
 // 该方法需要的参数
 call.addParameter( " a " , org.apache.axis.encoding.XMLType.XSD_INT, javax.xml.rpc.ParameterMode.IN); 
  call.addParameter( " b " , org.apache.axis.encoding.XMLType.XSD_INT, javax.xml.rpc.ParameterMode.IN); 
  // 方法的返回值类型
 call.setReturnType(org.apache.axis.encoding.XMLType.XSD_INT); 
  call.setUseSOAPAction( true );
  call.setSOAPActionURI( " http://www.tangs.com/Add " );
  // 调用该方法 
 Integer res = (Integer)call.invoke( new Object[] { i, j } ); 
 System.out.println( " Result: " + res.toString()); 
  } catch (Exception e) { 
 System.err.println(e); 
  } 
}  

运行，结果返回：
Result：3 
2.无参方法：
HelloWorld 
public static void helloTest() { 
 try { 
 String endpoint = " http://localhost:4079/ws/Service.asmx " ;
  Service service = new Service();
 Call call = (Call) service.createCall();
 call.setTargetEndpointAddress( new java.net.URL(endpoint)); 
 call.setOperationName( new QName( " http://www.tangs.com/T " , " HelloWorld " )); 
 call.setUseSOAPAction( true ); 
 call.setSOAPActionURI( " http://www.tangs.com/Hello " ); 
 String res = (String)call.invoke( new Object[] { null } ); 
 System.out.println( " Result: " + res); 
 } catch (Exception e) { 
 System.err.println(e.toString()); 
 } 
}  
可以看到，调用无参的webservice和有参的基本相同，不过无参调用时，不需要调用Call的addParameter方法和setReturnType方法执行结果返回：Hello, world!